Bed-plate for pulp-engines



(No Model.)

A. A. smouns.

BED PLATE FOR PULP ENGINES.

No. 310.230. Patented Jan. 6, 1885.

42 B JB. 3'

WITNESSES: INAVENTOR fly! NINA.

mmmmm ATTORNEY UNITED STATES PATENT OFFICE.

ALVAN A. SIMONDS, OF DAYTON, OHIO.

BED-PLATE FORIPULP-ENGINES.

SPECIFICATION forming part of Letters Patent No. 310,230, dated January 6, 1885.

Application filed May 10, 1884.

1'0 all whom it may concern.-

Be it known that I, ALVAN A. SIMoNDs, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented a certain new and useful Improvement in Bed-Plates for Pulp-Engines; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in bed-plates for pulp-engines; and it consists in the form of the plates and the arrangement of a series of them in sets, so that both the top and bottom surfaces may be used alternately for pulping purposes.

The mechanism is illustrated in the accompanying drawings, in which Figure 1 is a transverse section of a bed-plate. Fig. 2 is a series of the same as combined for use.

Similar letters designate like parts throughout the several views.

A is the plate, the inner surface of which is a plane. The center of the back surface is parallel therewith, with a long bevel on both edges, and at the longitudinal center the plate is bent, forming an obtuse angle, and has a series of bolt-holes near the vertical center. The body is of iron, the edges being plated with steel, as indicated by dotted lines at G C.

(No model.)

In the fitting of the plates for bolting together, they are so formed that the cuttingedges are circular across the faces corresponding to the curve of the fly-bar cylinder. A series of plates are bolted together by bolts B, and sets are formed of a varying number of plates. When in, the sets are attached to the bottom of a pulp-engine in proximity to the fly-bar cylinder, and when worn they are taken up, the ends reversed, and attached as before.

Sets of bed-plates thus constructed may be worn nearly down to the bolts by which they are united.

Having fully described my invention, what I desire to secure by Letters Patent is l. A bed-plate for pulp engines, formed with an inner plane surface, central back portion parallel therewith, and both edges of said rear surface beveled, as shown and set forth.

2. As a new article of manufacture, sets of bed-plates for pulp-engines, each plate having beveled edges on the same side, and intermediate flat abutting surfaces secured together by bolts to be operative in reversed positions, substantially as set forth.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

ALVAN A. SIMONDS.

Witnesses:

B. PICKERING, SUMNER '1. SMITH. 

